oj.uz

Submission #83659

# Submission time Handle Problem Language Result Execution time Memory
83659 2018-11-09T15:24:08 Z nikolapesic2802 Temperature (POI11_tem) C++14
100 / 100
 797 ms 17268 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
#define ll long long
#define pb push_back
 
const int N=1e6+5;
vector<int> lo(N),hi(N);
struct SegmentTree{
    vector<int> m;
    int n;
    void init(int nn)
    {
        n=nn;
        m.resize(2*n);
        for(int i=n;i<2*n;i++)
            m[i]=lo[i-n];
        for(int j=n-1;j>0;j--)
            m[j]=max(m[2*j],m[2*j+1]);
    }
    void set(int i,int k)
    {
        i+=n;
        m[i]=k;
        i>>=1;
        for(;i;i>>=1)
            m[i]=max(m[2*i],m[2*i+1]);
    }
    int get(int l,int r)
    {
        int ma=INT_MIN;
        for(l+=n,r+=n;l<=r;l>>=1,r>>=1)
        {
            if(l%2==1)
            {
                ma=max(ma,m[l]);
                l++;
            }
            if(r%2==0)
            {
                ma=max(ma,m[r]);
                r--;
            }
        }
        return ma;
    }
};
 
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    SegmentTree m;
    int n;
    cin >> n;
    for(int i=0;i<n;i++)
        cin >> lo[i] >> hi[i];
    m.init(n);
    int l=0;
    int maxx=INT_MIN;
    int res=0;
    for(int i=0;i<n;i++)
    {
        if(hi[i]<maxx)
        {
            l++;
            int r=i;
            while(l<r)
            {
                int mid=(l+r)/2;
                int d=m.get(mid,i);
                //printf("%i-%i   [%i][%i]=%i\n",l,r,mid,i,d);
                if(hi[i]<d)
                {
                    l=mid+1;
                }
                else
                {
                    r=mid;
                }
            }
            maxx=m.get(l,i);
        }
        maxx=max(maxx,lo[i]);
        res=max(res,i-l+1);
        //printf("%i-%i %i  %i\n",l,i,maxx,res);
    }
    cout << res;
    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 8184 KB Output is correct
2 Correct 9 ms 8184 KB Output is correct
3 Correct 9 ms 8256 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 8332 KB Output is correct
2 Correct 8 ms 8332 KB Output is correct
3 Correct 8 ms 8408 KB Output is correct
4 Correct 8 ms 8428 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 8552 KB Output is correct
2 Correct 12 ms 8572 KB Output is correct
3 Correct 11 ms 8576 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 12080 KB Output is correct
2 Correct 102 ms 12460 KB Output is correct
3 Correct 103 ms 13060 KB Output is correct

Subtask #5
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 187 ms 14212 KB Output is correct
2 Correct 200 ms 15624 KB Output is correct
3 Correct 529 ms 15624 KB Output is correct

Subtask #6
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 239 ms 15624 KB Output is correct
2 Correct 218 ms 15712 KB Output is correct
3 Correct 604 ms 15760 KB Output is correct

Subtask #7
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 292 ms 16352 KB Output is correct
2 Correct 216 ms 16352 KB Output is correct
3 Correct 797 ms 17268 KB Output is correct

Subtask #8
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 532 ms 17268 KB Output is correct
2 Correct 378 ms 17268 KB Output is correct
3 Correct 206 ms 17268 KB Output is correct

Subtask #9
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 159 ms 17268 KB Output is correct
2 Correct 141 ms 17268 KB Output is correct
3 Correct 147 ms 17268 KB Output is correct

Subtask #10
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 17268 KB Output is correct
2 Correct 152 ms 17268 KB Output is correct

Subtask #11
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 225 ms 17268 KB Output is correct
2 Correct 734 ms 17268 KB Output is correct

Subtask #12
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 206 ms 17268 KB Output is correct
2 Correct 675 ms 17268 KB Output is correct